A computational fluid dynamics and chemistry model for jet fuel thermal stability

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Journal of Engineering for Gas Turbines and Power; (United States)

DOI:https://doi.org/10.1115/1.2906291· OSTI ID:5332369

Krazinski, J L ^[1]; Vanka, S P ^[2]; Pearce, J A; Roquemore, W M ^[3]

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1. Argonne National Lab., Argonne, IL (US)
2. Univ. of Illinois at Urbana-Champaign, Urbana, IL (US)
3. Aero Propulsion and Power Lab., Wright-Patterson AFB, OH (US)

This paper describes the development of a model for predicting the thermal decomposition rates of aviation fuels. A thermal deposition model was incorporated into FLANELS-2D, and existing computational fluid dynamics (CFD) code that solves the Reynolds-averaged conservation equations of mass, momentum, and energy. The decomposition chemistry is modeled by three global Arrhenius expressions in which the fuel decomposition was assumed to be due to an autoxidation reaction with dissolved oxygen. The deposition process was modeled by assuming that all deposit-forming species transported to the wall adhered and formed a deposit. Calibration of the model required the determination of the following parameters for a given fuel: (1) the pre-exponential constant and activation energy for the wall reaction, (2) the pre-exponential constant and activation energy for the bulk autoxidation reaction, and (3) the pre-exponential constant and activation energy for the precursor decomposition reaction. Values for these parameters were estimated using experimental data from published heated-tube experiments. Results show that the FLANELS-2D code performed will in estimating the fuel temperatures and that the three-equation chemistry model performed reasonably well in accounting for both the rate of deposition and the amount of dissolved oxygen present in the fuel at the end of the heated tube.

• OSTI ID: 5332369
• Journal Information: Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 114:1; ISSN JETPE; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320201 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Air & Aerospace
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ACTIVATION ENERGY
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
COMPUTER CODES
DATA
DISSOLVED GASES
ENERGY
EXPERIMENTAL DATA
F CODES
FLUID MECHANICS
FLUIDS
FUELS
GASES
INFORMATION
JET ENGINE FUELS
KINETICS
MECHANICS
NUMERICAL DATA
PARAMETRIC ANALYSIS
REACTION KINETICS
SOLUTES
TEMPERATURE MEASUREMENT
THERMAL DEGRADATION
TWO-DIMENSIONAL CALCULATIONS
WALLS